Hermann kropff



(No Model.)

H. KROPPR.

. AIR 000mm APPARATUS. No. 271,716. Patented Feb. 6, 1883.

i if? 333:.

ATTORNEY.

N. PEIERS. "low-Lithographer, Wilhinghn DVC.

warren STATES ATENT rricn.

HERMANN KROPFF, on NEW YORK, N. Y.

AIR=COOLINIG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 271,716, dated February6, 1883,

Application filed April 24, 1882.

To all whom it may concern:

Be it known that I, HERMANN KROPFF, of the city, county, and State ofNew York, have invented certain new and usefullmprovements inAir-Cooling Apparatus, of which the following is a specification.

This invention relates to an improved apparatus for cooling air in largequantities in a very effective manner by a combination ofsurface-cooling and spray-cooling; and the invention consists of acombination of devices, as set forth in the claims.

The refrigerating-liquid isadmitted by a pipe to the lower part of thespace surrounding the air-channels, rises therein to a level with theupper edge of the same, and is shed in a thin sheet pver the innersurface of the air-chanpels and dropped in theform ofa spray through thelower chamber to the bottom of the same, from which it is conducted offby a dischargepipe. The upper ends of the air-channels are provided withspiral deflectors, whereby a spiral course is imparted to the air in itspassage through the air-channels.

The accompanyingdrawing represents a vertical central section of myimproved air-cooling apparatus.

A represents an exterior casing of suitable dimensions,and ofcylindrical, oblong, 'or other shape, which is closed at the top andbottom. The casing'A is provided at the upper part with an air-inductionpipe, to, and at the lower part, ata point diagonally opposite to theairiuduction pipe, with an air-eduction pipe, at. The middle portion ofthe casing A between the induction and eduction pipes a a is arrangedwith a series of vertical air pipes or channels, B, which are supportedat the upper and lower ends by perforated diaphragms B. To the spaceformed around the series of airpipes Bis admitted, by a supply-pipe, I),at a point near the lower diaphragm B, the refrigerating-liquid, whichrises then Vertically in the space surrounding the air-pipes, its motionbeing in opposite direction to that of the aircurrents passing throughthe air-pipes B.

hen the refrigeratingliquid arrives at a level with the upper ends ofthe air-pipes it passes through perforations in the upper diaphragm Binto the air-pipes B, and is shed in a thin sheet over the inner surfaceof the same (No model.)

charnber O, passing then down through the airpipes .13 and through thespray of refrigerating-liquid in the drip-chamber D to the pipe,conducting the air to the place of use.

The circulation of the refrigerating-liquid is kept up by means of apump, whereby the refrigerating-liquidsuch as ice-water, brine, &c.isreturned to the air-cooler after being cooled to a low temperature bymeans of ice or a refrigerating apparatus. The air which passes throughthe pipes is first brought into direct surface contact with thecooling-liquid, whereby its temperature is considerably reduced, and isfinally forced, on arriving at the lower end of the ainpipes, throughthe drippings or sprays of the refrigerating-liquid in the drip-chamber,whereby the temperature is still further lowered by the direct action ofthe liquid, and thereby the air at the same time washed and purified.The air is thus chilled both by surface contact and by the directpassage through the time sprays of the refrigerating-liquid, to bethence conducted off for fur ther use. To impart to the air forcedthrough the air-pipes B a spiral course, short spiral deflectors e areemployed, which are inserted into the upper ends of the pipes andsupported on a vertical diametrical bearing-strip 0t slightly largerdiameter than the air-pipes, as shown in the drawing. These deflectorsimpart to the air a spiral motion, so that it passes I am aware that airhas been cooled in pipes IOO 2. In an air-cooling apparatus, thecombination of the spiral air-deflectors e e, the upper chamber, 0, theair-channels B, lower chamber D, diaphragms B, and supply-pipe 1),submingled with air in pipes or chambers and the l air conducted toapartments for cooling purposes.

Having thusdescribed myinventioml claim as new and desire to secure byLetters Patent-- stantiallv as described.

1. An air-cooling apparatus having spiral I In testimony that I claimthe foregoing as air-deflectors inserted into the upper ends of myinvention I have signed my name in presthe air-pipes, and supported on avertical diaence of two subscribing" witnesses. metrical bearing-stripof larger diameter than HERMANN KROPFF. the said ainpipes, which latterconduct air and cooling-liquid from the upper to the lower chamber,substantially as described.

YVitnesses: I PAUL GOEPEL,

CARL KARP.

